Home / 219,821.12-303,192.96-139,261.76

Finding the Fourth Proportional to 219,821.12, 303,192.96 and 139,261.76

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Solution

The fourth proportional to 219,821.12, 303,192.96 and 139,261.76 is: 192,079.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,821.12 : 303,192.96 = 139,261.76 : x
  2. Step 2: Convert to fraction form
    219,821.12/303,192.96 = 139,261.76/x
  3. Step 3: Cross multiply
    219,821.12x = 303,192.96 × 139,261.76
  4. Step 4: Simplify right side
    219,821.12x = 42,223,185,229.21
  5. Step 5: Solve for x
    x = 42,223,185,229.21/219,821.12
  6. Step 6: Final answer
    x = 192,079.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.